water volume

MikeA1

Rookie here. Want to heat a shop 60' X 80'. Intend on 16 loops. Building has 16' overhang, 4-12x14 OH doors, 1-8x10 OH door. Insulation is 3" fiberglass all around. Using Insultarp under my six inch concrete pad. Using 500,000 btu boiler. Currently have 3/4" Kitec 60'away from boiler. Will the 3/4 provide enough water from boiler? Or do I need to split the building and run another set of lines from the boiler? Does this set up sound OK or am I all wet?

Thanks Mike

MikeA1

water volume

Rookie here. Want to heat a shop 60' X 80'. Intend on 16 loops. Building has 16' overhang, 4-12x14 OH doors, 1-8x10 OH door. Insulation is 3" fiberglass all around. Using Insultarp under my six inch concrete pad. Using 500,000 btu boiler. Currently have 3/4" Kitec 60'away from boiler. Will the 3/4 provide enough water from boiler? Or do I need to split the building and run another set of lines from the boiler? Does this set up sound OK or am I all wet?

Thanks Mike

Karis hvac

3/4 inch pipe

Check out Dan's book "The Golden Rules of Hydronic Heating" We figued 8-10 gpm=1" pipe maybe 1 1/4"

Weezbo

Depends.....

a friend asked a similar question,look lets just lash up some 3/4 rehau or wirsbo tap it into the 2" let it do its thing.... about two weeks later we hooked it into our caravaned boilers and thier 1 1/2" header bagged the rehau and its been running fine.... the building is ten times the size of yours. i dont know kitec. i could look it up in the inter net or on one of my numerous programs that i seldom if ever use:)) building has , 2 20 ' doors 3 16'all kinds of man doors glass all over one wall a group of offices a conference room,board room blah blah blah blah blah....out side temp in the 20 and 30s at night i just didnt see a reason for concern...30 below maybe i wouldnt be quite so bold:)

Mark Hunt

500,000 btu's?

How did you come up with that number? That is a heat loss of 100 btu's/ft/hour.

Just curious.

Mark H

To Learn More About This Professional, Click Here to Visit Their Ad in "Find A Professional"

Weezbo

I Think....

Mark is asking with a half a meg radiating heat what would you need radiant floor heat for?

MikeA1

The 500,000 number is what the outside wood boiler has a Max output of. Again, I will have 16 loops of 300' 1/2" pex in 6" concrete. Supply will be 3/4" from the boiler to the shop, it is 60' away. Will use a Taco 011 pump. ??????

Thanks
Mike

kevin coppinger_4

Has a total heat loss....

been done? From the way that the question has been posed it sounds like not....VERY important. You say you want to do 16 loops where did that # come from? 300' is pushing the limit on 1/2"...3/4" is undersized; w/ a 20F delta T the max is 40,000 btu's...MOST radiant systems are figured @ 10F delta T so the pipe size needed is much bigger...one the concrete goes in it will too late to shorten your tube lengths....please don't guess, get the numbers so you know...kpc

To Learn More About This Professional, Click Here to Visit Their Ad in "Find A Professional"